diff --git a/config/initializers/activities_counter_cache.rb b/config/initializers/activities_counter_cache.rb
index f7317b0..b382a8f 100644
--- a/config/initializers/activities_counter_cache.rb
+++ b/config/initializers/activities_counter_cache.rb
@@ -1,4 +1,5 @@
-if Delayed::Backend::ActiveRecord::Job.table_exists?
+if Delayed::Backend::ActiveRecord::Job.table_exists? &&
+  Delayed::Backend::ActiveRecord::Job.attribute_names.include?('queue')
   job = Delayed::Backend::ActiveRecord::Job.all :conditions => ['handler LIKE ?', "%ActivitiesCounterCacheJob%"]
   if job.blank?
     Delayed::Backend::ActiveRecord::Job.enqueue(ActivitiesCounterCacheJob.new, {:priority => -3})
diff --git a/config/initializers/person_notification.rb b/config/initializers/person_notification.rb
index ab5bd80..d4086df 100644
--- a/config/initializers/person_notification.rb
+++ b/config/initializers/person_notification.rb
@@ -1,3 +1,4 @@
-if Delayed::Backend::ActiveRecord::Job.table_exists?
+if Delayed::Backend::ActiveRecord::Job.table_exists? &&
+  Delayed::Backend::ActiveRecord::Job.attribute_names.include?('queue')
   PersonNotifier.schedule_all_next_notification_mail
 end
--
libgit2 0.21.2